Which action should be taken to reduce refrigerant loss in the purge unit of a CFC-11 chiller?

To reduce refrigerant loss in the purge unit of a CFC-11 chiller, conducting a leak test and repairing any identified leaks is essential. Refrigerant loss can occur due to leaks, and if these are not addressed, the efficiency of the system is compromised, and more refrigerant needs to be added frequently. Performing regular leak tests helps identify problematic areas that may not be immediately apparent, allowing for timely repairs and minimizing refrigerant discharge into the atmosphere.

This approach not only conserves refrigerant but also complies with environmental regulations regarding the release of ozone-depleting substances. By focusing on leak detection and repair, the integrity of the entire cooling system is maintained, enhancing operational efficiency and sustainability.

While regular maintenance of the compressor is important for overall system reliability, it does not specifically target the issue of refrigerant loss through purging. Increasing refrigerant levels may provide a temporary fix but does not address the root cause of the loss, which is leakage. Switching to an alternative refrigerant is a significant change that may not be immediately practical, and it does not directly address the current leaks in the chiller.